1987

7.7

2002

7.2

1964

7.6

1980

8.2

2004

7.5

1992

7.7

1980

6.7

1997

5.2

2005

7.0

1986

6.9

2006

6.1

1973

7.7

2009

5.9

2023

7.1

10.0

2022

7.0

2004

5.9

1985

6.2

2005

5.7

2002

5.7